Engine Swap

[blackbeauty21]

ok gents i have a dillemma i have an 89 gmc sierra with 216xxx miles on it with new tranny t case and both diffs but the engine is pretty tired and leaks horribly 5.7 tbi 350. Im an ex racer and have a fresh 69 nova 2 bolt 350 bored 60 over with small pop ups fresh rings and bearings ballanced blue printed with 0 degree deck height 280 cam would it be a dum iidea if possible to put my tbi top end on it and drop it in the truck? if not wat will i have to change?

[hrspwr]

You can put it in, there is no question about that. The question you should be asking yourself is, 'Do I really want to choke out that motor with the TBI instake?'

If you want to put that motor in your truck, I would find an intake setup that would compliment the motor.

[blackbeauty21]

well wats ur suggestion? i am very uneducated with efi and tbi stuff lol

[6.2 GMC]

Something to think about, depending on the state/location that you reside in, there will/may be issues with smog emissions that you may have to deal with, that motor combo will not pass a smog test

[blackbeauty21]

central washington....they dont check smog

[GMstrong]

buy a carb intake throw a nice edelbrock carb on her.probably 300 tops for both.one hell of a screamer there!

[blackbeauty21]

but if i switch to a carb ill have to change fuel management wont i? its throttle bodied so id have to put a fuel regulator on or something? or could i just put a manual pump on with a carb and intake and call it good wat about the3 distributor? stock one?

[Doug_Scott]

but if i switch to a carb ill have to change fuel management wont i? its throttle bodied so id have to put a fuel regulator on or something? or could i just put a manual pump on with a carb and intake and call it good wat about the3 distributor? stock one?

 

No idea if stock will work, but, stock pre-injection is a single wire to install. If you have a tach, that too is a single wire that you should be able to find in the stock harness as it probably was connected to the original distributor.

 

You should be able to install a fuel pump, not sure if the original pickup in the tank will allow fuel to be pulled through the original pump though.

[blackbeauty21]

Oh awell i have the one out of truck and an after market hei so thats not a big deal, and im pretty sure id have to change the pickup and remove electric pump from the tank...wat if i got a bigger intake for the throttle3 body set up and a tbs and bigger injecters instead of carb intake and manual pump?

[hrspwr]

This is what I did to my brothers car. His car was originally a fuelie and he wanted a carb. We left the stock pump in the tank and then put a regulator and a return line to the tank. This way the carb got its 9psi and the rest went back to the tank. Also a regulator is cheaper than buying the whole sending unit.